Substantia NigraDuodenoscopyParkinson DiseaseCrohn DiseaseDopamineParkinsonian Disordersalpha-SynucleinDopaminergic NeuronsTyrosine 3-MonooxygenaseOxidopamineSubstantia Gelatinosa1-Methyl-4-phenyl-1,2,3,6-tetrahydropyridineCorpus StriatumMesencephalonParkinson Disease, SecondaryNeuronsMPTP PoisoningLewy BodiesBasal GangliaSubstantia InnominataGlobus PallidusAntiparkinson AgentsTegmentum MesencephaliLevodopaNerve DegenerationNeostriatumBrainRats, Sprague-DawleyPutamenApomorphineVentral Tegmental AreaSubthalamic NucleusCaudate NucleusReceptors, DopamineDopamine Agents1-Methyl-4-phenylpyridiniumReceptors, Dopamine D2Neural PathwaysDopamine Plasma Membrane Transport ProteinsDopamine AgonistsSynucleinsAutoradiography3,4-Dihydroxyphenylacetic AcidHypokinesiaDeep Brain StimulationDisease Models, AnimalNeuroprotective AgentsNeurodegenerative DiseasesBehavior, AnimalMotor ActivityHydroxydopaminesGlial Cell Line-Derived Neurotrophic FactorSympatholyticsDopamine AntagonistsNeurotoxinsgamma-Aminobutyric AcidMultiple System AtrophyImmunohistochemistryNerve Tissue ProteinsExtrapyramidal TractsRed NucleusThalamusQuinpiroleStereotaxic TechniquesAdrenergic AgentsParaquatSupranuclear Palsy, ProgressiveMice, Inbred C57BLLewy Body DiseasePedunculopontine Tegmental NucleusBrain Chemistry2,3,4,5-Tetrahydro-7,8-dihydroxy-1-phenyl-1H-3-benzazepineMelaninsSulpirideReceptors, Dopamine D1Receptors, Dopamine D3Homovanillic AcidGlucosylceramidaseNomifensineRotenoneHaloperidolRats, WistarVesicular Monoamine Transport ProteinsMicrogliaCarbidopaBrain Tissue TransplantationUbiquitin-Protein LigasesBenzazepinesAction PotentialsStilbamidinesMedial Forebrain BundleElectric StimulationMovement DisordersLocus CoeruleusMazindolCell DeathCell CountAmphetamineAnalysis of VarianceMuscimol